Delhi Health Minister Satyendar Jain today, however, said the proportion of cases being reported in Delhi are "far less" as compared to some of the other states, like Gujarat and Maharashtra.
At least 30 fresh cases of dengue were reported last week, taking the number of people affected by the vector-borne disease in the city this year to 180, according to the latest municipal report.
The total number of malaria cases recorded till July 22 has shot up to 230 while the chikungunya cases stand at 195, it said.
Jain, quoting figures of the National Vector-Borne Disease Control Programme (NVBDCP) said, till July 16, at least 23,094 cases and 32 deaths due to dengue have been reported across the country, while Delhi has only 180 cases.
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Also, two deaths due to swine flu have been reported in Delhi, but fatalities due to this disease recorded in Gujarat and Maharashtra are quite high, he said.
Authorities in Delhi fear the cases in the city may rise as the season for the vector-borne diseases begins from mid- July and generally lasts till November-end.
Cases of all three vector-borne diseases have been reported much earlier this time, which doctors have attributed to early arrival of the monsoon.
Of the 230 malaria cases, 116 affected people were residents of Delhi while rest of the cases diagnosed were traced to other states. At least 57 cases have been recorded this month.